Rubin, Donald2017-04-072010Rubin, Donald B. 2010. βOn the Limitations of Comparative Effectiveness Research.β Statistics in Medicine 29 (19) (July 29): 1991β1995. doi:10.1002/sim.3960.0277-6715http://nrs.harvard.edu/urn-3:HUL.InstRepos:32095392en-USOn the limitations of comparative effectiveness researchJournal Article10.1002/sim.3960